source: prologue/hostreqs.xml@ 1fa0f19

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
  %general-entities;
]>

<sect1 id="pre-hostreqs">
  <?dbhtml filename="hostreqs.html"?>

  <title>Host System Requirements</title>

    <para>Your host system should have the following software with the
    minimum versions indicated. This should not be an issue for most
    modern Linux distributions. Also note that many distributions will
    place software headers into separate packages, often in the form of
    <quote>&lt;package-name&gt;-devel</quote> or
    <quote>&lt;package-name&gt;-dev</quote>. Be sure to install those if
    your distribution provides them.</para>

  <itemizedlist spacing="compact">

    <listitem>
      <para><emphasis role="strong">Bash-2.05a</emphasis> (/bin/sh
      should be a symbolic or hard link to bash)</para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Binutils-2.12</emphasis> (Versions
      greater than &binutils-version; are not recommended as they have
      not been tested)</para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Bison-1.875</emphasis> (/usr/bin/yacc
      should be a link to bison or small script that executes bison)</para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Bzip2-1.0.2</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Coreutils-5.0</emphasis> (or Sh-Utils-2.0,
      Textutils-2.0, and Fileutils-4.1)</para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Diffutils-2.8</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Findutils-4.1.20</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Gawk-3.0</emphasis> (/usr/bin/awk
      should be a link to gawk)</para>
    </listitem>

    <listitem>
      <!-- Gcc-2.95.3 breaks feature tests when using CC="gcc -B/usr/bin/"
           in the *-pass1 sections -->
      <para><emphasis role="strong">Gcc-3.0.1</emphasis> (Versions
      greater than &gcc-version; are not recommended as they have not
      been tested)</para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Glibc-2.2.5</emphasis> (Versions
      greater than &glibc-version; are not recommended as they have
      not been tested)</para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Grep-2.5</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Gzip-1.2.4</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Linux Kernel-2.6.x</emphasis>
      (having been compiled with GCC-3.0 or greater)</para>

      <para>The reason for the kernel version requirement is that thread-local
      storage support in Binutils will not be built and the Native POSIX
      Threading Library (NPTL) test suite will segfault if the host's kernel
      isn't at least a 2.6.x version compiled with a 3.0 or later release of
      GCC.</para>

      <para>If the host kernel is either earlier than 2.6.x, or it was not
      compiled using a GCC-3.0 (or later) compiler, you will have to replace
      the kernel with one adhering to the specifications. There are two methods
      you can take to solve this. First, see if your Linux vendor provides a
      2.6 kernel package. If so, you may wish to install it. If your vendor
      doesn't offer a 2.6 kernel package, or you would prefer not to install it,
      then you can compile a 2.6 kernel yourself. Instructions for compiling the
      kernel and configuring the boot loader (assuming the host uses GRUB) are
      located in <xref linkend="chapter-bootable"/>.</para>

      <note>
        <para>This version of the book builds a 32-bit Linux system and
        requires an existing 32-bit version of of the kernel on the Intel/AMD
        x86 architecture.  Adding capabilty for x86_64 systems is a major
        objective of a future version of LFS.  Support for 64-bit systems and
        additional architectures can be found in the Cross-Compiled Linux From
        Scratch (CLFS) project at <ulink url="http://cross-lfs.org/view/svn/"/>.
        </para>
      </note>

    </listitem>

    <listitem>
      <para><emphasis role="strong">M4-1.4</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Make-3.79.1</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Patch-2.5.4</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Perl-5.6.0</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Sed-3.0.2</emphasis></para>
    </listitem>

    <listitem>
      <para><emphasis role="strong">Tar-1.14</emphasis></para>
    </listitem>

    <!-- Needed by the apparently broken Binutils-2.18 -->
    <listitem>
      <para><emphasis role="strong">Texinfo-4.8</emphasis></para>
    </listitem>

  </itemizedlist>

  <para>Note that the symlinks mentioned above are required to build an LFS
  system using the instructions contained within this book. Symlinks that
  point to other software (such as dash, mawk, etc.) may work, but are not
  tested or supported by the LFS development team, and may require either
  deviation from the instructions or additional patches to some
  packages.</para>

  <para>To see whether your host system has all the appropriate versions, and
  the ability to compile programs, run the following:</para>

<screen role="nodump"><userinput>cat &gt; version-check.sh &lt;&lt; "EOF"
<literal>#!/bin/bash
export LC_ALL=C

# Simple script to list version numbers of critical development tools

bash --version | head -n1 | cut -d" " -f2-4
echo "/bin/sh -> `readlink -f /bin/sh`"
echo -n "Binutils: "; ld --version | head -n1 | cut -d" " -f3-
bison --version | head -n1
if [ -e /usr/bin/yacc ]; then echo "/usr/bin/yacc -> `readlink -f /usr/bin/yacc`"; 
  else echo "yacc not found"; fi
bzip2 --version 2&gt;&amp;1 &lt; /dev/null | head -n1 | cut -d" " -f1,6-
echo -n "Coreutils: "; chown --version | head -n1 | cut -d")" -f2
diff --version | head -n1
find --version | head -n1
gawk --version | head -n1
if [ -e /usr/bin/awk ]; then echo "/usr/bin/awk -> `readlink -f /usr/bin/awk`"; 
  else echo "awk not found"; fi
gcc --version | head -n1
/lib/libc.so.6 | head -n1 | cut -d" " -f1-7
grep --version | head -n1
gzip --version | head -n1
cat /proc/version
m4 --version | head -n1
make --version | head -n1
patch --version | head -n1
echo Perl `perl -V:version`
sed --version | head -n1
tar --version | head -n1
makeinfo --version | head -n1
echo 'main(){}' > dummy.c &amp;&amp; gcc -o dummy dummy.c
if [ -x dummy ]; then echo "Compilation OK"; else echo "Compilation failed"; fi
rm -f dummy.c dummy
</literal>
EOF

bash version-check.sh</userinput></screen>

</sect1>